Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6IOI callsign genealogy
Currently held by ALLARD, MARC E
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K6IOI's current licensee, walking backwards.
- ALLARD, MARC EORgranted 2026-03-07cancelled 2026-04-14
Successor callsigns
Callsigns held now by people who previously held K6IOI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6IOI, oldest first.
- ALLARD, MARC E CA2012-05-04 → cancelled 2024-05-07
- ALLARD, MARC E OR2026-04-14 active